Methyl 3,3,3-trifluoro-2-(thiazol-2-ylimino)propionate in cycloaddition and cyclocondensation reactions
作者:V. B. Sokolov、A. Yu. Aksinenko、T. A. Epishina、T. V. Goreva
DOI:10.1007/s11172-012-0300-6
日期:2012.11
The behavior of methyl 3,3,3-trifluoro-2-(thiazol-2-ylimino)propionate (1) in cycloaddition and cyclocondensation reactions was studied. Cycloaddition of dimethylcyanamide to imine 1 gave a thiazolo[3,2-a][1,3,5]triazine derivative. Cyclocondensations of imine 1 with 2-aminothiazoline, N-cyclohexylbenzamidine, methyl (Z)-3-aminobut-2-enoate, and 6-amino-1-benzyluracil yielded dihydroimidazo[2,1-b]thiazol-5(6H)-one, 4,5-dihydroimidazol-5-one, 4,5-dihydro-1H-pyrrol-5-one, and dihydro-1H-pyrrolo[2,3-d]pyrimidine-2,4,6-trione derivatives, respectively.
研究了 3,3,3-三氟-2-(噻唑-2-亚氨基)丙酸甲酯(1)在环化和缩合反应中的行为。二甲基氰酰胺与亚胺 1 环加生成了噻唑并[3,2-a][1,3,5]三嗪衍生物。亚胺 1 与 2-氨基噻唑啉、N-环己基苯甲脒、(Z)-3-氨基丁-2-烯酸甲酯和 6-氨基-1-苄基脲嘧啶发生环缩合反应,得到二氢咪唑并[2、1-b]噻唑-5(6H)-酮、4,5-二氢咪唑-5-酮、4,5-二氢-1H-吡咯-5-酮和二氢-1H-吡咯并[2,3-d]嘧啶-2,4,6-三酮衍生物。